Wolverhampton Wanderers sold Barry Douglas before bringing Jonny Castro Otto to the Premier League.
Dallas started at left-back on Saturday as Leeds drew with Brentford.
The Leeds United defender won't face Brentford this afternoon due to injury.
Leeds United will hope to move three points clear at the top of the Championship on Saturday.
The Leeds United defender's daughter is due to arrive imminently.
Leeds defender chose not to address his injury with his message after Tuesday night's win.
Leeds United's Tom Pearce now appears to be in contention to make his first Championship start of the season.
Leeds United put in a fantastic performance, but were unable to take home the three points from their latest Championship clash.
Marcelo Bielsa’s Leeds United drew with Sheffield Wednesday in the Championship on Friday evening.
Leeds United's Barry Douglas is the Championship's most creative defender.